Color scan of a Christelund Farm marketing letter, 1915.

Christelund Farm marketing letter

Christelund Farm marketing letter, 1915.

Map of the United States showing major and minor corn growing areas.

Major Corn-Growing Areas

Map of the United States showing major and minor corn growing areas.

Black and white photograph of a Settergren Seed Corn delivery truck, c.1930s.

Settergren Seed Corn delivery truck

Settergren Seed Corn delivery truck, c.1930s.

Black and white photograph of horse-drawn wagons hauling bags of seed corn to a railroad station for further transporting, c.1907.

Transporting seed corn by wagon and rail car

Horse-drawn wagons hauling bags of seed corn to a railroad station for further transporting, c.1907.

Color drawing of the four steps involved in the selective reproduction of better seed.

Selective Reproduction

Drawing of the four steps involved in the selective reproduction of better seed.

Black and white photograph of Alfred Carlsted counting sprouted kernels to determine the percent that germinated, 1914.

Germination Testing

Alfred Carlsted counting sprouted kernels to determine the percent that germinated, 1914.

Black and white photograph of Martin Carlsted turning the handle of a manual corn grader to grade and separate different sizes and shapes of kernels, c.1910.

Grading Kernels of Seed

Martin Carlsted turning the handle of a manual corn grader to grade and separate different sizes and shapes of kernels, c.1910.

Black and white photograph of Martin Carlsted turning the handle of a manual corn sheller to remove kernels, c.1910.

Shelling Ears of Corn

Martin Carlsted turning the handle of a manual corn sheller to remove kernels, c.1910.

Drawing of a farmer and his wife in bed with ears of corn suspended above them for drying in a warm bedroom.

Drying Seed in a Warm Bedroom

A farmer and his wife in bed with ears of corn suspended above them for drying in a warm bedroom.

Drawing of racks of corn suspended over a warm kitchen stove.

Drying Seed Above the Kitchen Stove

Racks of corn suspended over a warm kitchen stove.

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